Turbocharger: Description and Operation

TURBO CONTROL DESCRIPTION AND OPERATION

System Schematic:

HINT: This turbocharger system has 3 control valves (Exhaust Bypass Valve, Exhaust Gas Control Valve, Intake Air Control Valve). Each valve is controlled by turbo pressure which is controlled by VSV based on signals from ECM.

1. EXHAUST BYPASS VALVE
This valve controls the opening or closing of the exhaust bypass passage to ensure a smooth transition from 1 turbo operation to 2 turbo operation.

2. EXHAUST GAS CONTROL VALVE
This valve controls the opening or closing of the No.2 exhaust passage in order to operate No.2 turbocharger.

3. INTAKE AIR CONTROL VALVE
This valve controls the opening or closing of the No.2 intake air passage in order to pass the charged air from No.2 turbocharger.